OAKLAND (CBS SF) — A construction mishap appears to have caused a one-alarm fire that damaged a North Oakland apartment and displaced at least one resident Saturday morning, a fire captain said.

The blaze was reported at 10:45 a.m. at a home in the 600 block of 55th Street, according to Oakland fire Capt. Dino Torres.

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Crews arriving on the scene found fire coming from the roof of a rear apartment in the three-unit residential building.

No residents were inside the apartment at the time but contractors working on the home’s roof were on scene, Torres said.

Firefighters got the blaze under control in about 20 minutes and kept it from spreading to neighboring apartments within the same building, he said.

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No injuries were reported.

Torres said contractors working on the building’s roof appear to have accidentally started the fire.

The fire captain said damage from the blaze is estimated at about $40,000.

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